Using public channels with PHP

Public channels do not require authentication. Public channels can be used for features without sensitive information, such as these use cases:

Notify all users with the e-commerce page loaded when a new product goes on sale.
Live chat similar to YouTube chat.
Trigger updates for all clients currently viewing a page when it changes.

Frontend

<html>
    <body>
       <h1>Pusher test</h1> 
      <script>
        document.addEventListener('DOMContentLoaded', function() {
            var pusher = new Pusher("RESSONANCE_APP_ID", {
                cluster: "default",
                wsHost: "websocket.ressonance.com",
                wsPort: 443,                  
                wssPort: 443,                 
                forceTLS: true,               
                disableStats: true,            
                enabledTransports: ["ws", "wss"]
            });

            var channel = pusher.subscribe("public-channel");

            channel.bind("new-release", (data) => {
                alert("New release", data.release);
            });
        });
      </script>
      <script src="https://js.pusher.com/8.3.0/pusher.min.js"></script>  
    </body>
</html>

Backend

composer require pusher/pusher-php-server

This is a small PHP example application.

<?php

require __DIR__ . '/vendor/autoload.php';

$pusher = new Pusher\Pusher(
    'RESSONANCE_APP_KEY',
    'RESSONANCE_APP_SECRET',
    'RESSONANCE_APP_ID',
    [
        'host' => 'websocket.ressonance.com',
        'port' => 443,
        'scheme' => 'https',
        'useTLS' => true,
    ]
);

header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET,POST,OPTIONS');
header('Access-Control-Allow-Headers: Content-Type');

if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
    http_response_code(204);
    exit;
}

if ($_SERVER['REQUEST_METHOD'] === 'GET' && $_SERVER['REQUEST_URI'] === '/send-public-event') {
    $pusher->trigger('public-channel', 'new-release', ['release' => 'hello world']);
    echo 'Event sent!';
    exit;
}

http_response_code(404);
echo 'Not found.';

Using public channels with PHP​

Frontend​

Backend​

Using public channels with PHP

Frontend

Backend